Incinerator door



Patented Mar. 12, 1929.

m'ri n S -res A PATENT OFFICE.

EDWIN H.'.GRAVER, onennvnnnnnbnro, Assre-Non T BELLE-B. GELLN-ER, TRUSTEE,

- or CLEVELAND, 01110.-

Appli'eation fi ea narea i, 192s. selr iail'ua; 93,828

This invention is concerned with incinerators for-the disposal of garbage and has for.

venting the escape of inoxious gases therefrom. r

Other objects of my invention will'be' set forth in the following description which'pertains to the accompanying drawings. The

essential characteristics are summarized in the claims.

In the drawings Fig. 1 is across-sectional.

elevation .of an incinerator provided with a charging door embodying the features of my invention; Fig. sectional detail of the door structure and Fig. 3 is a cross-sectional view taken sul stantially along the line 3-3 of Fig. 2.

My invention contemplates the provision of a charging door for a garbage incinerator of the general type disclosed in my application filed on an even date herewith. It frequently occurs that it desired to charge garbage into an incinerator while the incinera-. tor is in operation and in modern incinerators such as are installed in apartment houses, hospitals, etc., it is the practice to charge the garbage into the incinerator at an elevation relative to the fire box of the incinerator, whereby the garbage may first be deposited upon a drying shelf or grate where it may be de-hydrated or desiccated. Accordingly, the charging doorway is built into the incinerator structure at such elevation that natural gas will not prevent the escape of noxious gases, if such doorway is opened I when the incinerator is in operation. I accordingly provide a doorway structure for an incinerator of the character referred towhich is provided with an inner door and an outer door and the volumetric capacity of the door 1 structure is such that by maintaining the inner door closed "I may deposit a considerable amount of garbage in the doorway or door passage and thereafter close the outer doorway before opening the inner doorway to permit the garbage to be deposited upon the drying grate.

In Fig. 1, I'show a charging doorway 0r passageway in the form of a large tube 10 extending through thefioor 12 of a'building in which an incinerator 14 is installed. This tube 10 extends also through the top wall 2 is an enlarged cross:

15 'of the incineratorstructure 14 w'ithjits inner end terminating above a drying shelf 16 of theinciner'ator'. The garbage charged through the doorwaytis deposited upon'the' drying shelf 16 and after being dried is thereafter moved to a fire grate '18 where it is consumedby' combustion 'A s'shown i Fi'g. 1, the nci11eratoi "strum ture is provided with a flue 20 through which thei steam and burnt gases escape from the'incinerator in a .well known man her. The lower end of the doorway or tube 10 maybe closed by a flat disklike member22and the outer or upper end of the tube may be closedby a "flat'disk-like, member 24, both o f'which closely fit't'heen'd' surfaces of the door tube which are preferably formed to be parallel. The closure members 22 and 24 may be mounted upon an offset bar Ol Sllflfb 30 which is prefer-- ably mounted on a branch portion 1O of the doorway tube 10 whereby the shaft may extend from end to end through the member 10 without permitting the escape of gases from the incinerator.

To permit the door members 22 and 24 to be operated independently, the lower clo sure member'22 is rigidly secured to the lower end of the bar 30 by a pin 23, while the upper closure member 24 is loosely mounted on the bar and the upper end of the bar is provided with a handle in the form of a turning knob or wheel 25 for swinging the lower or inner door. A resilient means in the form of a spring 26 may be disposed on the shaft intermediate the closure or door-member 24 and the handle intimate contact with the ends of the doorway tube 10 by reaction through the bar;

A knob 24 may be provided on the top 010- sure member 24 whereby itmay be shifted to expose the interior of the doorway tube 10 without causing a shifting movement of the bottom closure member 22 and by turning the'wheel handle, 25, the bottom of the closure member 22 may be shifted to open the bottom of the doorway tube 10, while the top closure member '24 maintains the top end of the tube sealed. l It will thus be seen that I provide a very simple yet efiicient door construction for an incinerator which will permit the charging of garbage into the incinerator when the integrally cast door frame,

same is in operation, while at the same time preventing the escape of noxious gases there from.

I claim: 1. In an incinerator door structure the combination of a tubular door frame having flat'parallel end surfaces, fiat members engaging said parallel surfaces to enclosethe door frame, means extending through the door frame for operating one of the members and means engaging said last named means for yieldingly urging said members" wlth said parallel sur-- into intimate contact faces of the door frame. y

2. In an incinerator door structure the "combination'of a unitary door frame having parallel end surfaces, members engaging said parallel surfaces to enclose the door frame, means connected to the door frame for operating one of the members and means engaging-said last named means forurging said members into intimate contact with said parallel surfaces of the door frame. 7

3. The combination with an incinerator wall having a garbage feedopening of an an inner closure member in slidable engagement with an end of the door frame, an outer closure member in slidable engagement with the opposite end of the for yieldingly urging said closure members into intimate contact with the ends of the door frame. H

4:. The combination with an incinerator Wall having a garbage feed opening, of a "door frame disposed in said opening, and

with the'end surfaces of the door frame.

door frame and'a spring in slid-- In testimony whereof, I hereunto aflix I my signature.

EDWIN H. GRAVER. 

